Multiple choice

Find out the wrong number in the following series. $8 \quad 13 \quad 36 \quad 93 \quad 353 \quad 1785$

  1. $8$
  2. $36$
  3. $93$
  4. $353$
  5. $1785$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern is ×2-3, ×3-3, ×4-3, ×5-3, ×6-3. Checking: 8×2-3=13, 13×3-3=36, 36×4-3=141 (not 93), 141×5-3=702 (not 353), 702×6-3=4209 (not 1785). The term 93 breaks the pattern - it should be 141. The series then remains broken.